Comments about Koh-I-Noor Nexus Studio Pens:

Koh-I-Noor usually makes great products, but these are simply awful. The ink is too watery, which causes the lines to bleed even on very heavily sized paper. Line quality is very scratchy and very similar to disposable pens sold in bulk at grocery stores, etc. I bought one of these to try, but found that I just couldn't use it for anything other than writing notes, etc. Definitely not recommended for drawing.

Note: I've only used the black ink version, so the color options might be a different story.

Comments about Koh-I-Noor Nexus Studio Pens:

I bought 2 packs of 9, had them in a cool storage for several months and they dried out :( never drew one dame picture, color is great! (if it works)

Comments about Koh-I-Noor Nexus Studio Pens:

These pens are great; however, they are inconsistently produced from the manufacturer.

Pros: Colors are superb and varied, design is unique and intriguing, good weight, has intrinsic quality in writing
Cons: Many are dead on arrival from several orders, seemingly random and short lifespan,

On writing quality and flow: each color has a different consistency ink; ebony has the most flow, almost too much in comparison to the others. I believe one of the darker sepia colors is also very juicy. Other colors like the ochres, and red sepia write much thinner, still giving sufficient ink. They all will smudge and take some time to dry (especially on moleskine). Overall, these variations make the pens interesting with different qualities, however I don't understand why Koh-I-noor cannot produce flow consistently. This gets to my second point on consistency: why do some of the same color last 10 sheets of papers, and others 100? I can understand why they run short lives overall as they let loose on the ink, but something is clearly wrong with the design that's causing 50% of them to be DOA or die after a few lines. I'm looking at NINE dead nexus pens on my shelf here, and my last are on their ends. (Please keep in mind I've only had about 15 of these pens; I may be getting bad batches, however other reviews here have made me think otherwise)

That being said, the ones that work are my top go-to pens, Try a few and see what you think - Blick is awesome at replacing DOA's if it may be the case.

KOH-I-NOR : address the production quality/consistency and I'll take a crate of red ochre, please.

Comments about Koh-I-Noor Nexus Studio Pens:

It's a Love / Hate relationship.
I love how they write and flow. The colors are awesome and they are waterproof so you can use watercolor over them. They are a great pen for pencil, pen and watercolor.
I hate that they bleed, bubble and just plain stop working!
I have a set of nine pens and four are dead within two months :(

btw: the Pilot P-700 is one of the best all around pens that I have come to know

Comments about Koh-I-Noor Nexus Studio Pens:

I love the line quality! However, they do smudge and are over priced. So far, I've only used the ebony color, but it really is fantastic. I'd like to see this pen be a dollar cheaper. I have a feeling that the ink will run dry more quickly than others, say Uni-ball. Also, the line is thinner than the tip appears and it can feel heavy after awhile.

Overall, I'm extremely happy with the ink quality and line quality.

Comments about Koh-I-Noor Nexus Studio Pens:

I love these pens. They are perfect for every use, balanced, comfortable for use in writing for long periods of time (note-taking, journals, poetry, etc.), as well as sketching or doodling. They create a clean, clear line of ink similar to a well-made fountain or caligraphy pen. I stumbled on them accidentally while testing pens at a local Blick's, what a serendipitous discovery!

Comments about Koh-I-Noor Nexus Studio Pens:

I ordered a set of all 3 sets. Pens either arrived leaking or not working. They were replaced twice. And every time the same.

Blick has been wonderfully quick with the replacements and finally crediting my account.
They think it could be air pressure related during the shipping process.

Comments about Koh-I-Noor Nexus Studio Pens:

I love the touch of the pens and variety of color. Color fast and a delight to use.

Comments about Koh-I-Noor Nexus Studio Pens:

Bought 3 black ones and 2 leak. Big glops of ink form on them when you're writing. yuck. The one that does work is great. Nice cap and the weight of the pen is great.